Dielectric hollow antenna

A dielectric hollow antenna apparatus, comprising:

• a waveguide configured from a hollow inside tapered rod with a flat section and a cap;
• a low loss dielectric material located within said hollow inside tapered rod, which protrudes beyond said waveguide to form a radiating element;
• and
• a feed through section, a feed pin, and a metal flange, wherein said feed through section reduces an internal reflection, and said antenna is installed via a tank nozzle for radar level gauging and to withstand high temperatures, wherein said radiating element is configured to maximize radiation and minimize reflection over an antenna bandwidth.

A method of configuring a dielectric hollow antenna, said method comprising:

• providing a waveguide configured from a hollow inside tapered rod with a flat section and a cap;
• locating a low loss dielectric material within said hollow inside tapered rod, which protrudes beyond said waveguide to form a radiating element;
• and
• forming a feed through section, a feed pin, and a metal flange, wherein said feed through section reduces an internal reflection, and said antenna is installed via a tank nozzle for radar level gauging and to withstand high temperatures.